12v Actuator to open/close a tap

[RossM]

Good afternoon gents,
I need to convert This manual valve into an electrically operated one.
I have been advised that the electric solenoid valves simular to this are restrictive so im going to try to adapt the manual one.



Does anybody know of a small 12v actuator which would be able to open the valve when given a 12v +ve feed then close when feed is removed, the feed will be live above 3000 rpm and dead below so on a good run the actuator musnt over heat.
I had thought about adapting a 'door popper' actuator but I think that would overheat if left live for more then a few minutes!

any ideas?

[larby]

Well an actuator would require voltage to move in each direction, it wouldn't snap shut like a solenoid. I'm sure there would be a solenoid valve out there capable of taking the flow, it'd probably be a much more reliable route. If one the same size is restrictive, go up a size.

If you wanted to go down the actuator road you'd need to rig it with relays so that your simple voltage on/off can be converted to whatever inputs the actuator requires. As for a solenoid doing the job, aside from the issue of it overheating if left on, I doubt it'd have the poke/stroke to turn the tap and the little spring that returns it to the closed position definately won't.

Maybe Peter Unwin would know of something? There's a lot of solenoid valves in hydraulics...

Hope that helps in some way?

James

[Hydrostream]

What is it you'r trying to do?

Is it to restrict water flow in the block at lower rpm?

Alan